The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 02, 2017
Filed:
Apr. 27, 2012
Akio Okamoto, Yamaguchi, JP;
Kazuaki Miyamoto, Yamaguchi, JP;
Toshikazu Iwamoto, Yamaguchi, JP;
Yuichiro Fukuda, Yamaguchi, JP;
Akio Okamoto, Yamaguchi, JP;
Kazuaki Miyamoto, Yamaguchi, JP;
Toshikazu Iwamoto, Yamaguchi, JP;
Yuichiro Fukuda, Yamaguchi, JP;
UBE MACHINERY CORPORATION, LTD., Yamaguchi, JP;
Abstract
An injection molding method comprising: a mold clamping step of clamping a first mold and a second mold to form a mold cavity; a first injection filling step of injecting a foamable molten resin into the mold cavity to fill an interior of the mold cavity with the foamable molten resin, after completion of the mold clamping step; a mold cavity expansion step of expanding the mold cavity by a specified quantity to cause the foamable molten resin to foam, after the start of the first injection filling step; and a second injection filling step of pouring a molten resin or gas into the foamable molten resin within the mold cavity, after the completion of the first injection filling step, and after the start of the mold cavity expansion step.